Patents by Inventor Nobujuki Matsunaga

Nobujuki Matsunaga has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Self-lubricating polyacetal wear part
    Patent number: 5106896
    Abstract: A self-lubricating wear part is formed of a polyacetal resin composition that includes (A) a polyacetal base resin, (B) an inorganic powder having an average particle diameter of 50 micometers or less, and a particle diameter distribution such that at least 95 percent of the particles have a diameter of 100 micrometers or less and (C) a fatty acid ester. The wear parts are particularly useful for slidable parts such as guide roller or guide pole.
    Type: Grant
    Filed: March 6, 1991
    Date of Patent: April 21, 1992
    Assignee: Polyplastics Co, Ltd.
    Inventors: Toshihiko Endo, Osamu Kanoto, Nobujuki Matsunaga, Kiichiro Fukui, Masajuki Suzuki